Inventors:
E. Canivenc,
Publication
D. Horba
date: 6 November
withdrawing substantially
Electrolyzer
pressure,
Arrignee: Chlorine
Engineers
Japan,
Ltd,
Corp
and Tosoh Corp, Japan This
invention
exchange
membrane
electrodes
at
exchange in
a dot-like
electrode
the ion exchange
via
and spacers
an
equal
of
between
and surface
of at
at a pressure
to
a concentrated
essentially
the
which
the membrane,
gas mixture
comprising
stream,
essentially
Publicarion date: 6 November
side of
a depleted
(at lea.&) one
Details
of
a sample
Inventors: Y.-E. Li, J.E. Paganessi,
D. Vassallo,
G.K. Fleming
two
Publication date: 6 November
200 1
elements
des Procedes, France,
of processes
and
systems
mixture.
In
one
the process
comprises
providing
a gas mixture
composed
perfluorocompound pressure);
providing
membrane
having
side;
and
of this
the steps
of:
of at least one
gas and at least one carrier
gas (the gas mixture
being
at a predetermined
at least one glassy polymer a feed side and
contacting
membrane
gas from
embodiment
invention,
to
the
feed
a permeate side
with the gas mixture.
of
this
It also involves
Research Trends for flux recovery
One
common
of
the
most
encountered
in water
membranes
is fouling.
(NOM)
represents
foulant.
Membranes
hydrophilic
Natural
a particularly
problematic
may be fouled by relatively hydrophobic
NOM
depending
on
characteristics,
membrane
properties
for
a
conditions.
To maximize
NOM-fouled (NTR
7410),
chemical
hydraulic
rinsing
with
a relatively
velocity
strategies. surface surfactant
were
investigated
The modification with
either was
NOM and
flux recovery
ultrafiltration
membrane flow
(UF)
cleaning high
and
Each
commercial porous and
phytase
rejection.
fouling
Foulants
evaluated and
from
to
because.of
nudease
The
improved
through
a
filtered,
solubility,
compared
High
performance
gel filuation
profiles indicated that
in the SPC remained
also had reduced
flavour
intact. The SPC
when
original soy flour, according
by
liquid
compared
to the
; permeate
flux by acid and caustic cleanings, from
than
cross-
or a cationic to
minimize
longitudinal channel
direction
sections flow
transitional
mass
has
(sodium
dodecyl
parameters
of
Langmuir
the
; efficiency of caustic cleaning, but not high ionic cleaning. The membrane was ; strength : successfully modified only with the cationic however,
: was accompanied
enhanced
NOM
by a significant
adsorption model
I
flux reduction.
I Adsorotion of dves on activated i carbon and natural zeolite of basic
enhance
NOM
onto
granular
a hydrophobic
NOM
zeolite
has
batch
dyes
from
activated been
data.
adsorber.
The
abruptly
the
in the
kinetic solid
concentration and
combined
investigation.
represented
with external
The mass
for
dependence on
by simple empirical
the
of the
the
initial
adsorbent
can
be
equations.
Vi Meshko,
L. Markovska,
Rodrigues:
Water Research 35(14),
(October
using the diffusion
is proposed
coefficient and
The
Freundlich
homogeneous
resistance
concentration
and
studied.
were determined
An
diffusion
2001
been
(solid diffusion),
M. Mincheva,
A.E.
3357-3366
2001).
Purification
of oily wastewater
Investigations
on
wastewater
using
(UF) and membrane
influence
method UF
polyvinylidene and
treatment
membranes,
have
module,
of
(MD) as a final
been
performed.
equipped (PVDF)
MD module
oily
of ultrafiltration
distillation
fluoride
and a capillary
A with
membranes,
with polypropylene
were tested using typical bilge water
an
that
of
pretreatment).
was
the
by a combination
tubular
aqueous
carbon
studied
dye
isotherms
purification
adsorption
that
reiection
: H. Lee, G. Amy, J. Cho, Y. Yoon, S.-H. Moon, i I.S. Kim: Water Research 35(14), 3301-3308 i (October 2001).
The
zones,
such
C. Lanyi, C. Biddell
initial
mass-transfer
surfactant,
by transitional
changes
adsorbent
time influenced
its
zones.
! cleaning
and longer cleaning
in
of subsequent
Patent number: US 6312591
adsorption
: velocity
with to be
for a concentrated
and arranged
agitation,
was comparatively
such
liquid
includes
separated
NOM
0.1 M NaCl
liquid
surfaces
a number
direction
to the
a respective
in parallel
channel
and is constructed
of the
of sample
an outlet
Each
: sulphate (SDS)) was not effective as a cleaning I agent for foulants from either hydrophobic or i hydrophilic NOM sources. High ionic strength with
a flow
hydrophilic
surfactant
side
construction.
with
Publication date: 6 November
j foulants
An anionic
either
is connected
and with
material
at a side adjacent
Inventors: V. Vassarotti,
to gas chromatography
and sensory evaluation.
a relatively
on
for the flow of sample
solution.
main
of an
over the membranes’
that each channel
in the pectinase was
each
in a sandwich
for feeding
the inlet
pair
each include or micro&ration
is provided
tangentially
the contaminant SPC
arranged
least
filtration
a sheet of support
of the blocks,
channel
at
two
between
cell
filtration
comprises least
The elements
material
membranes,
The
soy isolates that are produced
chromatography
flavour pro&s
using
system.
of the
increased
precipitation.
the proteins
activity
functionality
with conventional acid
diafiltered
the with
had reduced levels of physic acid
acids
and
and
treated
steel ultrafiltration
enzymes.
i solution : natural source were cleaned more effectively in terms of : agitated
membrane
pectinases
stainless
nucleic
Soy
was enzymatically
as cleaning
of the membrane
an anionic
also
flour,
ultrafiltration.
problems
components, operating
support
: effective in providing flux recovery for NOMmembranes compared with other applications of ! fouled : chemical cleaning agents. Increased cross-flow organic matter
treatment
and/or
membranes,
with
flow
two flat ultrafiltration
treatment
j source.
Cleaning strategies of a UF membrane
and (SPC) was
material,
It at
outlet for the filtrate, USA
concentrate
a process
liquid.
arranged
of enzyme
by
tangential
and
blocks.
produced
resulting product
recover at least one perfluorocompound a gas
production
out
blocks
A high quality soy protein
starting
Air Liquide, USA
are given
Sartorius AG, Germany
h+ee:
carrying
combined
Liquide, Societe Anonyme pour
l’Etude et Nxploitation
flow
for
Soy proteins
Separation and recovery of perfluorocompound gases
cell for tangential
Patent number: US 6312502
/I.r@zee: Abbott Laboratories, 2001
2001
The subject of this patent is a filtration
Patent number: US 63 12572 Publication date: 6 November
H. Shallo,
carrier gas.
Inventor:
and American
Filtration filtration
adjacent
S. Katayama
L.I. Ndife,
gas.
least one of the electrodes.
Assignee: IXir
Inventors: R.L. Thomas, L.P. Nelles
comprising
from the permeate
as a permeate
is
predetermined
at least one perfluorocompound
gas mixture,
ion
openings
spacing
membrane
ion
are mounted
on
to maintain
an
It comprises
positions
arrangement
surface
of
details
electrolyzer.
opposed
membrane,
stream),
And also withdrawing
provides
Patent number: US 63 13273
from the feed side of the membrane
(as a nonpermeate
2001
collected
from
The permeate
a harbour obtained
(without from the
Membrane Technology No. 144